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Hello everyone,
I own a M235i 2015 and it's equip with the Dinan Stage II, Dinan Cold Air Intake, Dinan highflow exhaust, Go Fast Bits Diverter Valve + and just had the Fabspeed HighFlow Downpipe. My question is, two days after I got the downpipe install at my BMW dealer, the check engine light turn on ! I was under the impression that these kind of Downpipe were design to not turn any lights on ! Is it the downpipe or the DV+ that turn it on ? Because I got them install at the same time.
Thanks.
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